"I also suggest coating the trowel in some type of form release agent or using one of the concrete cleaning products that are available," says Warner. "Some of the agents are biodegradable ...

An curved arrow pointing right. This hovercraft-like machine is used to smooth over concrete during construction. The HDX780 riding trowel was developed by Allen Engineering and is used for large ...

This type usually requires a minimum of two ... similar to the look and feel of smooth, hard-troweled concrete, then a second troweling will be necessary. The timing for the second troweling ...